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Engine Control Systems
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Pcm Inspection
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Inspection Using An Oscilloscope (Reference)
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IAC control signal
IAC control signal
Fig 1: IAC Control Signal Inspection By Using Oscilloscope (Reference)
Courtesy of MAZDA MOTORS CORP.
PCM terminal: 83(+)-24(-)
Oscilloscope setting: 2V/DIV (Y), 0.1 ms/DIV (X), DC range
Vehicle condition: idle after warm up
Courtesy of MAZDA MOTORS CORP.